Process for manufacturing a dashboard part equipped with an inflatable cushion.

摘要

Process for manufacturing a part of dashboard having an outer side, an inner side and a wall (29) including a cover (15) for a protection system (17) of pad (s) swellable (s) provided (s) behind the dashboard, as seen from outside, the lid is invisible from the enclosed exterior edge by a weakening (13) wall dashboard being, being this visible impairment on the inside and defining an opening for (the) pad (s) swellable (s), characterized by the following steps: (a) a layer of hard plastic material is injected (7), (b) is performed locally, on the inside, a weakening (13) in the layer of hard plastics material, (c) is coated on the outside layer of hard plastic material with a decorative coating (11), (d) a leg (27, 27¿) provided is expected a hinge (27b) for the articulation of the cover relative to a reinforcing frame (21) d and plásticoduro material adapted to be fixed to the dashboard on the inside and defining an ejection channel (39) for (the) pad (s) swellable (s), the naturally sensitive to vibrations leg being by an apparatus (35) of welding material (s), plastic (s) by vibration and thus being naturally liable to transmit these vibrations, such adapted to be secured to said hard plastic layer (7) material and at frame leg being reinforcement in the vertical of the lid, in zones located on the inside of the dashboard, (e) the leg (27) to the cover (15), (f) are fixed for attaching the reinforcing frame (21 ) the dashboard (5) is welded by vibrations to the layer of hard plastics material (7), in the immediate vicinity of the weakening (13) and, before the welding, there is a vibratory discontinuity between the reinforcing frame and the leg so that when welding the reinforcing frame takes place, some s vibration generadaspor this welding are absorbed outside the weakening that delimits the top, (g) and, just before step (f) or after this step, the leg (27, 27¿) is fixed to the frame reinforcement (21).